Computationally efficient multiuser detection for coded CDMA

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Publication Type Journal Article
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Mathews, V. John; Schlegel, Christian
Title Computationally efficient multiuser detection for coded CDMA
Date 1997
Description Abstract: Computationally efficient multiuser detection for coded asynchronous CDMA systems is investigated. The particular receiver studied is a near-far resistant multi-user detector known as the projection receiver (PR) [originally developed in [1, 2]]. The PR perfoms multiple access interference resolution for CDMA with error control coding. The output of the front-end of the projection receiver yields a metric for decoding of the coded sequences. This metric allows the use of a standard sequence decoder (e.g., Viterbi algorithm, M-algorithm) for the error control code. The metric computation can be performed adaptively by an extension of the familiar recursive least-squares (RLS) algorithm. The adaptive PR operates on a single sample per chip. In chis paper it is shown that for random spreading codes this algorithm simplifies and can be executed an order of magnitude faster by exploiting the average cross-correlation of the spreading sequences. The performance of boll1 algorithms are studied for CDMA with random spreading sequences aid compared to theorctical performance bounds.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
First Page 1
Last Page 4
Language eng
Bibliographic Citation Schlegel, C. B., & Mathews, V. J. (1997). Computationally efficient multiuser detection for coded CDMA. Int. Conf. Universal Personal Communications, 1-4. October.
Rights Management (c) 1997 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 811,640 bytes
Identifier ir-main,15161
ARK ark:/87278/s6w673t9
Setname ir_uspace
ID 702429
Reference URL https://collections.lib.utah.edu/ark:/87278/s6w673t9
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